390196871 has 4 divisors (see below), whose sum is σ = 390883200. Its totient is φ = 389510544.

The previous prime is 390196853. The next prime is 390196889. The reversal of 390196871 is 178691093.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (390196853) and next prime (390196889).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390196871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390196831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342311 + ... + 343448.

It is an arithmetic number, because the mean of its divisors is an integer number (97720800).

Almost surely, 2^390196871 is an apocalyptic number.

390196871 is a deficient number, since it is larger than the sum of its proper divisors (686329).

390196871 is an equidigital number, since it uses as much as digits as its factorization.

390196871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686328.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 390196871 is about 19753.4015045511. The cubic root of 390196871 is about 730.7372741440.

The spelling of 390196871 in words is "three hundred ninety million, one hundred ninety-six thousand, eight hundred seventy-one".